How To Rebuild Your Motorcraft 2100 Carburetor MotorCraft 2100-D Carburetor Exploded View Ref Num 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Description SCREW & LOCKWASHER SOLENOID SOLENOID ASSEMBLY PIN-VACUUM BREAK LEVER LEVER – VACUUM BREAK SCREW (3) – VACUUM BREAK COVER COVER – VACUUM BREAK DIAPHRAGM ASSY. – VACUUM BREAK SPRING – DIAPHRAGM RETURN SCREW & LOCKWASHER – CHOKE ROD LEVER LEVER – CHOKE ROD SCREW & LOCKWASHER (4) – BOWL COVER BOWL COVER ASSEMBLY GASKET – BOWL COVER SCREW (3) – STAT CLAMP CLAMP – STAT CHOKE COVER & SPRING ASSEMBLY GASKET – STAT COVER Ref Num 27 Description 32 33 SCREW – PUMP DISCHARGE NOZZLE PLATE – AIR DISTRIBUTION VENTURI CLUSTER ASSEMBLY GASKET – VENTURI CLUSTER ASSEMBLY WEIGHT – DISCHARGE CHECK BALL BALL – DISCHARGE CHECK RETAINER – FLOAT PIN 34 35 PIN – FLOAT HINGE FLOAT & LEVER ASSEMBLY 36 37 NEEDLE, SEAT & GASKET ASSEMBLY JETS - MAIN METERING 38 39 40 41 42 RETAINER – PUMP ROD PUMP ROD SCREW (4) – PUMP COVER PUMP COVER & LEVER ASSEMBLY PUMP DIAPHRAGM ASSEMBLY 43 SPRING – PUMP DIAPHRAGM RETURN VALVE – PUMP INLET CHECK 28 29 30 31 44 19 SCREW & LOCKWASHER – AIR SHIELD AIR SHIELD 20 21 RETAINER – CHOKE ROD ROD – CHOKE 46 47 22 23 SEAL – CHOKE ROD RETAINER LOWER – FAST IDLE CAM ROD SCREW & LOCKWASHER (3) – CHOKE HOUSING ASSEMBLY CHOKE HOUSING ASSEMBLY GASKET – CHOKE HOUSING 48 49 SCREW & LOCKWASHER (4) – ECONOMIZER VALVE COVER COVER – ECONOMIZER VALVE GASKET – ECONOMIZER VALVE COVER VALVE – ECONOMIZER GASKET – ECONOMIZER VALVE 50 CAPS – IDLE LIMITER 51 52 NEEDLE – IDLE ADJUSTING SPRING – IDLE ADJUSTMENT NEEDLE MAIN BODY ASSEMBLY 18 24 25 26 45 53 NOTE: This is the general design and parts for the Model 2100-D, the design and parts will vary to individual units from what is shown here. DISASSEMBLY Use the EXPLODED View as a guide. The numerical sequence may generally be followed to disassemble the unit far enough to permit cleaning and inspection. Note: if you still have the plastic limiter caps (50) on the idle adjustment needles you can use a sheet metal screw in the center of the cap and turn clockwise to remove. CLEANING Cleaning should/must be done with carburetor disassembled. Soak parts long enough to soften the dirt and remove all foreign material. Use 1. a carburetor cleaning solvent, 2. lacquer thinner, or 3. denatured alcohol. Make certain the throttle bores are free of all carbon and varnish deposits. Rinse off in suitable solvent. Blow out all passages in castings with compressed air and check carefully to insure thorough cleaning of obscured areas. Caution: do NOT soak parts containing rubber materials such as parts (2), (7), (28), (35), (42), (44), and (48) in cleaning solvent. REASSEMBLY Reassemble in the reverse order of disassembly. Note special instructions below, and follow the numerical outline in making adjustments necessary for setting up your carburetor. SPECIAL INSTRUCTIONS IDLE ADJUSTING NEEDLES (51) – Turn in until seated, then back out 1.5 to 2 turns. ECONOMIZER VALVE (48) – Use care when tightening to prevent distortion of gasket (49). PUMP INLET CHECK VALVE (44) INSTALLATION – Lubricate tip of new valve and insert in center hole of pump cavity. Use needle nose pliers and pull thru from the bowl side until fully seated. Cut off valve tip at retaining shoulder. PUMP DIAPHRAGM RETURN SPRING (43) INSTALLATION – Install large open end of spring over the rubber inlet check valve (44). CHOKE COVER (16) INSTALLATION – Be sure to install bi-metal spring hook in slot of lever. CARBURETOR HOLD DOWN NUTS – Torque to 14 ft.lbs. AIR CLEANER STUD – Torque to 10 ft.lbs. MC2100 Carburetor Adjustments